At Ground Zero: The 9/11 anniversary

•January 1, 1970

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New York City Commemorates 10th Anniversary Of 9-11 Terror Attacks

NEW YORK, NY - SEPTEMBER 11: New York City Police Officer Danny Shea, a military vet, salutes at the North pool of the 9/11 Memorial during the tenth anniversary ceremonies of the September 11, 2001 terrorist attacks at the World Trade Center site, September 11, 2011 in New York City. New York City and the nation are commemorating the tenth anniversary of the terrorist attacks on lower Manhattan which resulted in the deaths of 2,753 people after two hijacked planes crashed into the World Trade Center. (Photo by David Handschuh-Pool/Getty Images)

A look at the Ground Zero memorial ceremony and events throughout the day, commemorating the 10-year anniversary of the 9/11 terrorist attacks.